When it comes to big science, very few things are conclusively known. From Quantum Mechanics to Natural Selection, what we have instead are theories - ideas explain why things happen the way they do. We don't know for certain these are correct - no one ever saw the Big Bang - but with them we can paint beautiful, breathtaking pictures of everything from human behaviour to what the future may hold. Profiling the key scientists behind each theory, 30-Second Theories presents each entry in a unique, eye-catching full-colour design, with thought-provoking extras and stylish illustrations. It is essential for anyone keen on expanding their mind with science's most thrilling ideas.

The door opens . . . a voice comes on the line…the webpage loads . . . the meeting comes to order…and the moment has arrived.Ê Time to make that initial impression that could mean the difference between getting the job, securing the contract, making an impact—or not. But how do you make the right first impression—and make it last?